What did Sai Baba tell Cholkar about the dangers of argumentation and the path to self-knowledge?

The name 'Cholkar' does not appear in these passages from Chapter 2. The advice you are referring to was given by Sai Baba to the author, Hemadpant. Baba warned that a 'mind for argumentation' is a sign of 'abundance of ignorance and Maya,' and that such a person is unfit for self-knowledge. He specifically counseled, 'Do not establish your own side, do not refute the other side, do not engage in dualistic explanations.' According to Chapter 2, the true path involves dissolving the ego and surrendering at the Guru's feet, which allows for divine assistance and the attainment of self-bliss and true knowledge.